1305947 has 2 divisors, whose sum is σ = 1305948. Its totient is φ = 1305946.

The previous prime is 1305919. The next prime is 1305959. The reversal of 1305947 is 7495031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1305947 - 2⁸ = 1305691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1305907) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652973 + 652974.

It is an arithmetic number, because the mean of its divisors is an integer number (652974).

2^1305947 is an apocalyptic number.

1305947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305947 is an equidigital number, since it uses as much as digits as its factorization.

1305947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1305947 is about 1142.7803813507. The cubic root of 1305947 is about 109.3054585972.

The spelling of 1305947 in words is "one million, three hundred five thousand, nine hundred forty-seven".